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941.
Mohammed Amine Moussaoui Mohammed Jami Ahmed Mezrhab Hassan Naji 《Heat and Mass Transfer》2009,45(11):1373-1381
The present paper deals with the numerical investigation of a 2D laminar fluid flow and heat transfer in a plane channel with
two square blocks located at arbitrary positions. The numerical model is based on a coupling between the multiple relaxation
time-lattice Boltzmann equation and the finite difference method for incompressible flow. Both the horizontal and the vertical
separation distances between the two blocks are varied. Particular attention was paid to the distribution patterns of the
time averaged local Nusselt number on the top and bottom walls. Results obtained from the present study show a complex flow
patterns developed in the channel due to the change of the square blocks positions. 相似文献
942.
Mustapha Aitali My Youssef Ait Itto Aisa Hasnaoui Abdelkhalek Riahi Abdellah Karim Santiago García‐Granda Angel Gutirrez‐Rodríguez 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):e315-e316
The novel title ruthenium(II) complex, [RuCl(C10H14)(C10H10N3OS)], was synthesized from the reaction of 1,2,4‐triazepine, a new class of bidentate ligands, with [Ru(p‐cymene)Cl2]2. The 1,2,4‐triazepine ligand is coordinated to the metal centre through the N‐4 and S atoms, forming a four‐membered chelate ring. This is the first structural example of a transition metal complex containing a 1,2,4‐triazepine ligand. 相似文献
943.
Mohammed A. E. Shaban Ali Morgaan Hyungphil Chun Ivan Bernal 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e472-e473
Oxidative cyclization of 5‐ethyl‐3‐(4‐methoxybenzylidene)hydrazino‐1,2,4‐triazino[5,6‐b]indole gave the linearly annelated title compound, C19H16N6O. The skeleton is approximately planar, except for the ethyl group. 相似文献
944.
Mohammed Fettouhi 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(11):e495-e496
In the title compound, [Zn(NCS)2(C12H16N3O)2], the ZnII ion has a distorted tetrahedral coordination. It is bonded to two thiocyanate and two pyridyl N atoms. The metal ion and the two thiocyanate ligands lie on a mirror plane with the Zn—Npy and average Zn—NNCS bond distances being 2.036 (2) and 1.931 (4) Å, respectively 相似文献
945.
Mohammed M. Matar Esmail S. Abu Skhail 《Mathematical Methods in the Applied Sciences》2020,43(5):2528-2537
In this article, new trends of analysis on existence, uniqueness, and stability of solution for semi-linear fractional systems are considered. The results are based on a generalization of Bihari's inequality. Some examples are given to illustrate the results. 相似文献
946.
Priyadarshini S. Mainal Azizah Sonsudin Faridah Yahya Rosiyah Alyousef Abdullah A. Mohammed Arshad 《Research on Chemical Intermediates》2020,46(2):1077-1089
Research on Chemical Intermediates - Antibacterial titanium dioxide nanoparticles (TiO2NPs) were biologically synthesized by microwave irradiation of Cissus quadrangularis extract followed by... 相似文献
947.
948.
949.
Salima Atlas Mustapha Raihane Anders Hult Michael Malkoch Mohammed Lahcini Bruno Ameduri 《Journal of polymer science. Part A, Polymer chemistry》2013,51(18):3856-3866
Radical copolymerization based on acrylonitrile (AN) and 2,2,2‐Trifluoroethyl acrylate (ATRIF) initited by AIBN was investigated in acetonitrile solution. The resulting poly(AN‐co‐ATRIF) copolymers were characterized by 1H, 13C, and 19F NMR and IR spectroscopy, and size exclusion chromatography (SEC). Their compositions were assessed by 1H NMR. The kinetics of radical copolymerization of AN with ATRIF was investigated from sereval experiments achieved at 70 °C from initial [AN]0/[ATRIF]0 molar ratios ranging between 20/80 and 80/20 and was enabled to determine the reactivity ratios of both comonomers. From the monomer—polymer copolymerization curve, the Fineman–Ross and Kelen–Tüdos laws enabled to assess the reactivity ratios (rAN= r1 = 1.25 ± 0.04 and rATRIF = r2 = 0.93 ± 0.05 at 70 °C) while the revised patterns scheme led to r12 = rAN = 1.03, and r21 = rATRIF = 0.78 at 70 °C. In all cases, rAN x rATRIF product was close to unity, which indicates that poly(AN‐co‐ATRIF) copolymers exhibit a random structure. This was also confirmed by the Igarashi's and Pyun's laws which revealed the presence of AN‐ATRIF, AN‐AN, and ATRIF‐ATRIF dyads. The Q and e values for ATRIF were also assessed (Q2 = 0.62 and e2 = 0.93). The glass transition temperature values, Tg, of these copolymers increased from 17 to 61 °C as the molar percentage of ATRIF decreased from 77 to 16% in the copolymer. Thermogravimetry analysis of poly(AN‐co‐ATRIF) copolymers showed a good thermal stability compared to that of poly(ATRIF) homopolymer due to incorporation of AN comonomer. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013 , 51, 3856–3866 相似文献